ASTROSAT CZTI

Data Quality Report

Orbit 24305

Creation date: 2024-06-27T19:04:35.227825
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_145T01_9000003594_24305cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24305cztM0_level2_quad_clean.evt
Size (bytes)552,355,20085,752,000
Size526.8 MB 81.8 MB
Events in quadrant A3,036,843555,532
Events in quadrant B3,031,468574,630
Events in quadrant C3,763,030548,246
Events in quadrant D6,478,367487,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128921
B0128931
C0150011
D0235222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175590.955466%
B6176741.198187%
C61762113.416451%
D617599716.145749%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7235 6176 0 0 0.00% 0.00%
B 7236 6176 0 0 0.00% 0.00%
C 7236 6176 70 70 0.97% 1.13%
D 7235 6176 958 958 13.24% 15.51%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 1 61093 392.43 770 755 153.8
A 5 203 10142 61.05 770 755 153.8
A 13 254 8895 52.94 770 755 153.8
B 12 111 17698 116.63 767 748 145.3
B 11 111 15795 103.54 767 748 145.3
B 14 111 14040 91.46 767 748 145.3
C 2 16 438910 2576.75 731 736 170.0
C 7 247 355558 2086.59 731 736 170.0
C 14 238 116453 680.49 731 736 170.0
D 1 52 3450001 20193.67 699 678 170.8
D 8 195 249214 1455.03 699 678 170.8
D 12 233 86130 500.27 699 678 170.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter